08:47 AM EST, 12/05/2024 (MT Newswires) -- Citigroup ( C ) will become the exclusive issuer of the AAdvantage co-branded card portfolio in the US in 2026 under a new agreement with American Airlines Group ( AAL ) , the companies said Thursday.

The companies said Citi agreed to acquire the Barclays (BCS) American Airlines co-branded card portfolio and will start transferring cardmembers to its portfolio in 2026.

Citi and American Airlines ( AAL ) also said their more than 37-year co-branded partnership will be extended for the next decade.

Shares of American Airlines ( AAL ) rose more than 7% in premarket activity Thursday, while Citigroup ( C ) declined slightly.

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